Use of poulticing in desalination of masonry units � implications on salt-deteriorated structures

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dc.contributor.author Manohar, Swathy
dc.contributor.author Santhanam, Manu
dc.coverage.spatial India
dc.date.accessioned 2021-12-24T11:50:53Z
dc.date.available 2021-12-24T11:50:53Z
dc.date.issued 2021-11
dc.identifier.citation Manohar, Swathy and Santhanam, Manu, "Use of poulticing in desalination of masonry units � implications on salt-deteriorated structures", Current Science, vol. 121, no. 10, pp. 1307-1315, Nov. 2021 en_US
dc.identifier.issn 0011-3891
dc.identifier.uri https://www.currentscience.ac.in/Volumes/121/10/1307.pdf
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7343
dc.description.abstract Cellulose poulticing is a widespread method of desali nation in practice for removal of salts from ancient structures. Optimization of the process is essential, considering that poulticing/desalination is the prime step during the protection of existing structures in the coastal zones. Even though poulticing is widely used in European countries, it is not common in India, because the principle and efficacy of the method have not been studied so far for masonry materials in the ancient Indian structures with specific microstructure. The present study analyses the effect of cellulose poul ticing in bricks considering the role of pore size in the substrates and the removal of different types of salts depending upon the pore distribution. The process was found around 74% more efficient in removing Na2SO4 than NaCl in materials with more micropores (pore size <1 ?m), as demonstrated from scanning electron microscopy images and analysis of pore struc ture using mercury intrusion porosimetry on brick samples. Interesting results on the unsuitability of cel lulose poulticing in certain materials and the reasons for the same were obtained, which are based on the predominant transport mechanisms for salt removal. The study would be a reference for initiating cellulose poulticing as an effective desalination method in the ancient structures of coastal southern India.
dc.description.statementofresponsibility by Swathy Manohar and Manu Santhanam
dc.format.extent vol. 121, no. 10, pp. 1307-1315
dc.language.iso en_US en_US
dc.publisher Indian Academy of Sciences en_US
dc.subject Conservation en_US
dc.subject Desalination en_US
dc.subject Historic struc tures en_US
dc.subject Protection|Salt weathering en_US
dc.title Use of poulticing in desalination of masonry units � implications on salt-deteriorated structures en_US
dc.type Article en_US
dc.relation.journal Current Science


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